Surprise – Chris Pratt and Katherine Schwarzenegger are engaged! In the wee hours of Sunday night, the 39-year-old actor excitedly announced on Instagram that he popped the question to his girlfriend after less than a year of dating. "I'm thrilled to be marrying you," Chris wrote. "Proud to live boldly in faith with you. Here we go! 💍🙏♥️" The happy news comes just a week after the couple rang in the new year in Mexico together, but how much do you actually know about Katherine? Don't worry, we went ahead and did the research for you — here are five things to know about Chris's new fiancée. Congrats again to Chris and Katherine!